gears for 31" BFG's

[EXinMN]

I have a 91' EB and i was wondering if i need to get different gears if i put 31's on or will stock be fine............i think stock is 3.27

 

[Joey P]

If there 3.27 you'll be fine, you'll just notice a different feel in the gas pedal when you take off from a stop. 3.73 would be better and 4.10 probably would be best.

 

[EXinMN]

Thanks for the info

 

[CodePoet]

I have 3.27's and am running 31" MT's. I do have a manule tranny and it's a good deal lower than the auto. But you should be ok, there's one guy here running 32" or 33"s with 3.27's (but he doesn't offroad i don't think). I really don't have too many problems with it, yeah it'll bog down abit on a long hill in 5th gear but not too bad. I can stil pass people pretty well. Offroad in first it's pretty good still...i just built a hand thottle and can easily redline it. Anyway good luck man, seems like your gonna have a lifted ex soon!

Good luck and post pics!
CP

 

[mrboyle]

I went to 3.73's (from 3.27's) when I went to 31's. I strongly rcomend doing so if you have an auto tranny. The stock tranny in the X is marginal at best, and the added stress of trying to turn the 31's could be too much and extreemly shorten the life of the tranny.

 

[Alec]

3.73 or 4.10 (esp if you plan on going bigger).

 

[EXinMN]

thanks for the info everyone............also how much $ for a some 4.10's...............31's are as big as im gonna go.......nothing bigger

 

[mrboyle]

thanks for the info everyone............also how much $ for a some 4.10's...............31's are as big as im gonna go.......nothing bigger

I said the same thing when I did mine. That decision lasted about 1 year. Now I wish I would have gone with 4.10's so I can move up to 33's.

 

[Alec]

And I paid to change gears twice. First to 3.73, then to 4.30.

 

[CodePoet]

thanks for the info everyone............also how much $ for a some 4.10's...............31's are as big as im gonna go.......nothing bigger

Famous last words LOL
That's EXACTLY what I said also...now i'm planning on an sas, 35" tires, and 5.13 gears

I'm going to install my gears myself (i have the tools)...and it won't be a daily driver so i'll have the time to do it

Later
CP

 

[EXinMN]

not mad or anything....but can anyone answer my ??......about how much 4.10 gears cost.......and if i do with some 31's how much will my speedo be off.........im SERIOUS the biggest im gonna go is 31's........i cant afford nothing bigger

 

[Alec]

http://www.randysringandpinion.com/

Speedo will be a few to about 8 miles slow at 70.

 

[EXinMN]

thanks for the info Alec

 

[Alec]

oops, no. i'm wrong i think. it will be that much fast.

actually, lemme answer that in the morning. my brain is absolutely fried. 20 hr days will do that to ya.

 

[expHendrix47]

I'm running 31" all terrains with my 5.0 AWD, im not sure of what gears are in mine, but they don't seem to have changed the way the truck performs or accelerates...will this kill my tranny if i don't change the gears from stock?

 

[Redrig]

oops, no. i'm wrong i think. it will be that much fast.

actually, lemme answer that in the morning. my brain is absolutely fried. 20 hr days will do that to ya.

I think you were right the first time. My speedo is slower than im actually going.